And exactly why is an IRS official making public statements about an audit? Seems to me it is not his place to do anything but his job - which does not include PR.
He didn't. He was responding to Trump's claims that Trump was targeted for an audit. But, he responded with a generic explanation of an audit, and nothing about Trump's specific audit.
And, he didn't use the terms "liar" or "suspicious". That was a fabrication by the author of the article.
The original poster put up this article with no context. Unless you go read the full article AND search for other articles that accurately quote the IRS chief, you can be easily duped into believing that's what he said.
That's exactly what the original author intended, and you fell for it. Don't feel bad, because you weren't the only one. But, maybe the original poster will now understand why I pointed out how her posting perpetuated the attack on Trump.